Grain-harvester.



No. 720,635. PATENTED FEB. 17, 1903;

'J. F. STEWARD.

GRAIN HARVESTER.

APPLICATION FILED JUNE 4! 1902. N0 MODEL. H 2 SHEBTS BHEET 1.

No. 720,635. PATENTED FEB. 17,1903.

J. P. SIEWARD.

GRAIN HARVESTER. APPLICATION FILED JUNE 4, 1902.

N0 MODEL. Y 2 SKEETS-SH BBT 2.

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L J I E 2 i I wk Y J HIEIEHI illlllll iijim UNITED STATES PATENT OFFICE.

JOHN F. STEWARD, OF CHICAGO, ILLINOIS.

GRAlN-HARVESTER.

SPECIFICATION forming part of Letters Patent N 0. 720,635, datedFebruary 17, 1903. Application filed June 4, 1902. Serial No. 110,136.(No model.)

To all whom it may concern:

Beitknown that I,J 0HN F. STEWARD, a citizen of the United States, and aresident of Chicago, in the county of Cook and State of Illinois, haveinventedcertain new and useful Improvements in Grain-Harvesters, ofwhich the following is a specification.

My invention relates to the motive power of harvesters, and especiallyapplies to that class known as headers or push machines. In encounteringexcessive resistance due to heavy grain or some obstacle in the path ofthe wheels in the use of such machines the direction of poll from thedraftanimals will cause the rear end of the machine to rise from theground, while the main wheels will sink into the ground. My improvementwill overcome this difficulty.

Referring to the accompanying drawings, which form a part of thisspecification, Figure 1 is a plan view of an ordinary header fitted witha binder attachment and showing an engine connected in a manner to adaptit to drive the machine, the operators platform over the caster-Wheel,with numerous other details, being omitted. Fig. 2 is a grain sideelevation of the rear end of the machine, showing levers for operatingthe various parts and means for driving the supporting casterwheel whenturning the corners of the field; and Figs. 3 and 4 are fragmentaryviews showing details of clutch, the clutch-operating device, andreversing mechanism.

In Fig. 1, A represents the main axle, which is sustained in the twomain supportingwheels A and A Forward ot' the axle A and supportedthereby isthe grain-receivingwith the caster-wheel is secured abevel-gear Y M. The caster-wheel is turned in its swivelbearing by meansof the laterally-extending lever F rigidly secured to the prolongationof the pivot-formingstandard F".

forms a bearing for the shaft G.

.the present invention is concerned, to be merely an engine of any kind.On the engine E are the sprocket-wheels e and e, keyed to thecrank-shaft.

Journaled in pieces secured to the main frame of the machine in the rearof the drivewheel is the cross-shaft G. On this crossshaft at thestubble end is keyed a bevelgear g, which meshes with the bevel-piniong, and the latter through the shaft 9 com- It is sufficient heremunicates motion to the operative parts of the machine except, in thisinstance, from preference merely, the reel R, which is driven by asprocket -chain 1", passing around a sprocket-wheel ron the reel-shaftand the sprocket-wheel?" on the main drive-wheel A.

On the shaft G sleeves the usual clutch 9 a sprocket-wheel g and piniong all as one piece. Also on the shaft G is feathered a clutch g adaptedto engage the clutch 9 The clutch g is held in engagement with theclutchg by the spring g In a rigid bracket H and directly beneath thepinion g? is secureda stud, on which journals an intermediate pinion G,meshing with the said pinion g. The bracket H supports a split box, inwhich journals the one piece clutch, sprocket, -and pinion, which piecein turn In the rear end of the bracket H is secured a stud h, on whichis pivoted a horizontally-extending lever H. On a stud h in the forwardend of this lever journals'the pinion H adapted to be swung into meshwith either the pinion g or G at will. On the same stud h, concentricand integral with the pinion H isthe sprocket-wheel H Passing over thesprocketwheel H and the sprocket-wheel e on the crank-shaft of theengine E is the sprocketchain h By means of the bell-crank K, theconnecting-link 7c, and the rod 7a, which extends to and connects withthe latch-lever K, the required control of the driving-gearing iseffected, and thus either forward or backward motion of the machine maybe accomplished or a starting and stopping of the machine produced.

The operative parts of the machine (the reel excepted) are thrown intoaction by the clutch g, which is feathered on the shaft G, being broughtinto engagement with the clutch 9 which with the sprocket-wheel g andpinion g sleeve as one piece on the said shaft G. The movement of thesaid clutch g is effected by the lever I, pivoted in the casting 2 whichis secured to a suitable portion of the main frame, the said lever 1engaging the said clutch by means of a groove therein, as shown in Figs.1 and 3. The free end of the lever I is actuated transversely by meansof the link 1', the bell-crank I, and the rod 7?, leading to andconnecting with a suitable leverl on the operators platform. The

spring g sleeved also on the shaft G, holds the clutching mechanism inengagement and prevents disengagement of same until the spring ispositively compressed by the operator through the means above described.

Attached at the rear end of the thrusttongue A is the bracket L, whichreceives a stud Z, Fig. 2, bearing the pinion Z and the sprocket-wheel Zas one piece and holding them in such a position that when thecasterwheel is turned until its plane is almost transverse with the lineof advance of the machine, as shown by dotted lines in Fig. 1, the largebevel-gear M on the side of the casterwheel F will mesh with the pinionZ. Thrown over the sprocket-wheel Z and the sprocketwheel 6 on thecrank-shaft of the engine E is the sprocket-chain s.

T is the water-tank used in connection with the engine E, and tis thepipe leading from said tank to the water-jacket of said engine. Thegasolene-storage tank may be placed inside the tube forming thethrust-tongue similar to the arrangement shown in the patent referredto.

The operation of my machine is as follows: When the engine is oncestarted, continuous motion will be imparted to the spur-pinion H and thebevel-pinion Z through intervening sprocketchains and sprocket wheels,as shown. If the pinion H on the rocking arm H is moved into contactwith the gear G, Fig. 4, by means of the lever described, then, assumingthat the crank of the engine is moving forward in the upper half of itsrevolution, a forward motion will be given to the main wheel; but if thepinion is moved into engagement with the pinion then the motion of themain wheel will be reversed. \Vhen midway between the two positionsdescribed, no engagement is obtained and the machine is inoperative. Theclutch g when engaged with the clutch will communicate motion to thecross-shaft G, and thus to the entire machine, when the pinion g isengaged indirectly with the pinion I-I through the pinion G.

The bevel-gear M may be attached to the caster-wheel F by any usualmeans. It is sufficient in most soils, however, to depend on theyielding qualities of the soft ground to relieve the machine of theshock incident to starting the wheelF suddenly; but in lieu of a rigidfastening any of the well-known yielding connections may be interposedbetween the said bevel-gear and Wheel F to reduce the shock of starting.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a harvesting-machine, a main frame supported on one or moremotor-wheels, a motor-engine mounted on the said frame and geared tosaid motor-wheels, aguiding-wheel journaled in a suitable bracket, saidbracket adapted to oscillate on a vertical axis and thus change theplane of movement of the said guiding-wheel,and means whereby the changeof plane of the said guiding-wheel on said vertical axis causes the saidguiding-wheel to receive rotation from a moving part actuated by saidengine, substantially as described.

2. In a traction-engine, motor-wheels, an engine geared to saidmotor-Wheels, a guiding-wheel, said guiding-wheeljournaled in a bracketmovable on a vertical axis and provided with gearing by which it can berotated, a tiller, by means of which the plane of said wheel may bechanged at will, said tiller also serving to produce engagement of thegearing of the said guiding-wheel with a part moved by said engine,substantially as described.

3. In a harvesting-machine, motor-wheels, a main frame supportedthereon, an engine mounted on said frame and geared to saidmotor-wheels,a guiding-wheel bracket,a guiding-wheel mounted thereon andnormally out of engagement with the moving part of the machine, avertical axis extending upwardly from said bracket, and means forthrowing said guiding-wheel into engagement with a constantly-movingpart of the machine when the said Wheel-bracket and Wheel are turnedupon the said vertical axis to a position transverse to the line ofadvance, as when the corner of the field is reached, whereby the saidmachine may be turned upon the main supporting-wheel as an axis,substantially as described.

4. In a harvesting-machine, traction-wheels, a main frame suitablymounted thereon, a tiller-wheel supporting the rear end of said mainframe, an engine supported upon the main frame, means for connecting theengine to the said tractionwheels and to the operative parts of theharvesting-machine, and means for also connecting the said engine to thetiller-wheel, at will, said tiller-Wheel being normally out ofengagement with said means, all combined substantially as described.

JOHN F. STEWARD.

In presence of J. O. WARMS, EDWARD R. BARRETT.

